Timbren FR350SDJ SES Rear Suspension Enhancement System - 8,600 lb Load Support | Progressive Load Stability & Zero Maintenance Reliability | Levels Truck, Reduces Sag, Roll & Sway | DIY Install

Placed on a 2025 F350 Ford XLT, able to install from the wheelwell w/o having to jack up the truck or remove the tire. Workes perfectly when towing the 5th wheel but does not change the ride in any way when truck is unloaded. I used the included spacers with the kit.

I don’t write many reviews but I feel compelled to write this one. Bought these for my 2022 F350 and they work awesome! I tow a 13,000 lb. Fifth wheel and had some definite rear end squat even though I was not over weight for the axle. Was a little skeptical of these but seemed a lot easier and cheaper than doing airbags so I gave it a try. All told from unboxing to final installation was about 30 minutes. Helpful hint, I assembled them first, then used my Jack to raise the rear end a couple inches while still keeping the wheels on the ground, just to create a little space between the axle and frame. Unbolt the factory bump stops and bolt these on, simple as that. These work exactly as advertised, no more squat, so better handling and braking. Have towed my fifth wheel over 2000 miles since installing and very happy with these. Highly recommend, this is a great product!

timbrens arrived as stated complete. Easy installation good instructions. I have not had a load on the truck yet so time will tell on performance.

HUGEEEE DIFFERENCE; 10/10 would buy again in a second… just look at the difference between the stock and the timbren and, easy install. Took me like maybe 25-35 minutes. I jacked up the body a little bit with a bottle jack. I did this just to get a little more clearance and easy Peezy.

These made SUCH A DIFFERENCE for hauling our 34’ 5th wheel!!! LOVE THEM!!

Works as advertised.

Install was super easy and having many air bag setups on previous trucks even one with an full air ride figured I’d give these an try. Easy to install on my 18 F350 single wheel. They only allowed truck to squat 1.5” when loaded and rides pretty good. Harsher than bags that tend to float across bumps but bags when unloaded still apply pressure so makes your unloaded ride stiffer and little bouncy. These ride same as OEM unloaded which is an plus but for my application I need to remove the half inch spacer as even though I’m unloaded it’s only got about 1/4” space which allows them to touch when going over most bumps in road making it an harsher ride unloaded. Removing the spacer will allow more squat when loaded but also allow them not to touch while general driving at least 3/4” spring travel. Half cost of bags with no maintenance and easy install is why I turned to these. Time will tell on rubber life of them. Understand every truck is an different weight setup with options so mine having bed cover, small tool box and spray in liner adds weight to the unloaded stance thus the removal of optional spacer is an must.

Great way to enhance your rear suspension !!! Easy to install !! I pull a 5th wheel camper and adding these the truck doesn’t squat like it did ! I feel l have better control and handling with them on !! Fallow the installation direction for spacing , so when you are not hauling no weight your truck will ride normal! Not like air bags that make a rough ride with no weight because you have to keep 5 lb of pressure!!!

These work extremely well to help reduce movement when towing my travel trailer. I set them up with the included spacer so there is minimal sag in the rear of the truck with the 8000 lb trailer attached. Noticeably less sway, even with the Blue Ox hitch connected. Better level ride. They are great. Only down side is with the spacer the unloaded ride is a little more stiff, but considering the improvement when towing they are worth it.

Stops the excessive sag and rolling when I have the slide in camper in my truck bed. I had these on my previous truck, and they work so well I installed them on the new one. The regular duty version are perfect as they don't make contact when there is light load on the truck, so they don't stiffen the unloaded ride quality.

I was getting the dreaded rear end sag when hauling my fully loaded 16 foot equipment trailer, or the travel trailer and 2 quads on my F350. Was contemplating airbags again, but for a fraction of the cost, absolutely ZERO maintenance and perfect stock ride when I am not hauling there was no second guessing this purchase. 15 minutes to install and I could not be happier. Timbren makes amazing Canadian made products, and stands behind them. You will NOT be disappointed.

Very easy to install , works and support very well. I highly recommend this product

Def get these if you are looking to save money instead of airbags. Only problem is that they make your truck bouncier on smoother roads but they absorb the big bumps better